Speed clutch



' R. sALLER Dec. l, 1931.

A SPEED CLUTCH Filed Dec. 20.A 1928 2-Sheets-Shest l for:

Zolero fzljef Dec. 1, 1931. l' R; sALLER 1,833,977

SPEED CLUTCH Filed Dec. 20. 1928 2 Sheets-Sheet 2 Patented Dec. 1, 1931 ROBERTO sALnER, oFBUENos AIRES, ARGENTINA y `semana cLUi'cn i Y j y application meeneem-ber 2o, 1928. Vserairiva 327,303.

. 'present invention relates to 'certainimQ provements in speedv clutches of the type Y removed.

disclosed in my prior APatent No. 1,724,044, dated August 13, v1929, its main object being to" provide an "improved hydraulic progres-` sive speed clutch which shows many practical advantages over `those proposed and used heretofore. .y f

The invention has also'other objects in `view whichwill be clearly seen. from the following description.

In order that my present invention may be clearly understood and easily carried into practice, a preferred embodiment thereof has been shownin the appended drawings wherein:

f 'Figure 1 is a longitudinal sec-tion ofthe fly wheel with the clutch mechanism according to my present invention.`

Figure 2 is a side view of the clutch with the drive-shaftfbearing and'fly-wheel cover Similar characters of reference denote the i parts throughout the said drawings.

With reference to the said drawings: l is the fly wheel provided with Aa number of cylinders cast in one piece. 2 are the pistons, 3 the connecting' rods, 4 is the connecting rod hub, 5 isV the liquid contr-cl valve body, 6 is the valve thereof and? the valve cover. Y 10fare piston and hub-pins, 11 is the hub to fiy-wheel support pin, 12 are pipes connecting the cylinders to the valve. the cylinder plugs, 14 is the control valve connecting rod, 15 is a control lever, 16 are the control lever pins,f17 is the control lever bracket, 18 is the drive-shaftv bearing and control-leverV support, 19 v is the fly-wheel cover, 20 are the fly-'wheel cover screws. 21 is an eccentric which forms the bearingl for` the connecting rod-hub 4, 22 are the eccentric control levers, 23 are the `eccentric 'control lever-pins, 24 is the main drive shaft, 25 is the motor crank shaft. Y

The hydraulic progressive clutch is ydivided Y into two sections. One of theseis composed of the fly-wheel, pistons, connecting rods, connecting rod-hub, controlvalve, pipings, drive shaft bearing, control lever support and fly- 13 are"v wheel 'cover-2' The second .sectionisvconsti` tuted the eccentricmechanism and main drive shaft. f Y 1 y These two sections may rotate separately or as oneunit. According to the improvement ofmy pres'- ent invention, the cylinders are arrangedin pairs set at 180o angle.' Each pair of'cylinders are connected with a pipel12, with the Y Y Y control valve in the line. Vith this arrangement, all the liquid 'pumped outvof one cylinder flows throughthepipe 12 and valveinto the opposite cylinder. Thisfis to prevent the forming lof vacuum inthe cylinder during` the suction stroke, causing the piston to knock Y badly, which was theL case in my former invention. l Each cylinder is providedwith anf automatic `auxiliary liquidf inlet 26, which Y admits to the cylinder the same amount of i liquid that may leak out kpast the piston or 'I0 control valve. Y In Figure l2, eight pumps are shown, four on each eccentric. However, any number of pairs of pumps may be used: i Also' y one control valve is` shown but, if. desired more may be used in the clutch. In all cases 75 A the cylinders, piping and controlvalve are filled with liquid, whether in or out of operailOIl. i i-v *w15 l According' to my A.present improvement two u eccentrics 21 are used, they being arranged to operate at an 'angle of 180o from each other.h VViththis system,the complete mechanism is y maintained `in balance, regardless of the po-v counterbalance iseliminated.` v

According to my present improvement, the control has been modified in order toperinit independent. control of the eccentrics and of the liquid control valve. A sleeve 27 has been v added on .the main drive shaft 24 which'is held',` in place by themain drive shaft pres-v sure spring support' and sleeve guidepins 29. The sleeve guide pin slots 30 permit the sleeve suficient in and out travel to operate the liquid control valve. VThev drawings show 'two springs.4 Gn one end both springs are siuoported` 4by control' tspring thrust bearing 8l., Onthe other end the smalljspring 32 is supported by the.` main sition of the eccentrics and :therefore the 85 drive shaft pressure spring support and con-1 1,00*

trol'sleeve guide pins 29. vThe large spring 28 applies its pressure to the sleeve liquid control valve flangeV 33. The control lever 15 is normally brought against the said flange 33 by actionof a spring 34. YThe drawings q show the eccentrics out and the pistons in theY working position, but the liquid control valve is still open, allowing the sleeve 27 :tomove in until the opposite end of the slots rest on the guide pins-29, in which Vposition Vthe liquid control valve is closed. V Now, movingy again the sleeve 27 to' theposition as shown in Y." the drawings,only the large spring 28 has been compressed with this movement and the main l drive shaft 24 has been held stationary by the small spring 32. As the sleeve 2p`'vis withdrawn further, the end of the slots'BO come into-contact with the guide pins v29', from which point on, both control sleeve 27 and main drive shaft 24 are withdrawn together until the clutch is in neutral position.

By the foregoing it can be seen that the ec- Y Y centrics and the liquid control valve are operatedseparately; that is to say, the liquid control valve is always open when the eccentric is moved and theeccentric is always in working Yposition before the liquid control l valve can be operated. This permits the setsubstantially corresponds to that of my pre- Y the eccentricity of the hubs.

Y has been. clearly set forth vious application.

- It isobvious that-many constructional and 7 other changes may be introduced without departing from the scope of the invention which in the appended claims. u f Y Y Y le Having now Yfully Y' described and'v ascertained the nature of my present invention and in what manner the same is to be carried into practice, I declare thatl what I, claim: and desire l to protect'by LettersPatent Vis l. A progressive hydraulic speed clutch comprising afly-wheel having a plurality of pairs ofk cylinders therein; a piston foreach cylinder; a motor crank shaft secured to said fly-wheel; a main drive shaft; a pairr of hubs eccentrically mounted on the VInain shaft, said drive shaft being axially shiftable to. vary the eccentricity of the hubs andsaid pistons being connectedto said hubs; pipes connectingeach pair of opposite cylinders; a control valve for the-pipes connected be- Y tween the cylinders of each pair; andmeans o for separately operating said control valve and axially shifting said dri-ve shaft to vary V2. VAprogressive h dra-ulic speed clutch comprising a fly-wheel having ai plurality of The connecting pairs of cylinders therein Vand liquid therein; a piston for each cylinder; a motor vcrank y l said drive shaft being axially shiftable to fvary the eccentricity of the hubs. and said pistons kbeing 4connected `to' said hubs; pipes connecting each pair of opposite cylinders; a` control valve for the pipes` connected between the cylinders of' each pair; and means forvseparately operating said control valve and axially shifting said drive shaft to vary the eccentricityof -thehubs y Y 'A progressive hydraulicy speed clutch comprising afly-wheel having a'plurality of pairs ofcylindersgtherein; a piston for each cylinder; a-Inotor crank shaft secured to said fly-wheel; a main drive shaft; a pair of hubs eccentrically mounted on themain shaft, said driveshaft being axially shiftable to vary the eccentricity of thejhubs and said Vpistons being connected to said` hubs; pipes connecting each -pair of .opposite cylinders ya control valve for the. pipes connected between the cylinders of each pair; a lever Vsystem for thevalveyand -means on the main shaft for operating the lever systemand yfor adjusting and axiallyshifting said drive shaft to vary the eccentricity of the hubs.

4. A progressive hydraulic speed `clutch comprising afiy-wheellhavinga plurality of 1` Y pairs of cylindersltherein; aj-piston for each cylinder; a motor crank shaft secured to said fly-wheel; amain drive shaft; a pairof hubs eccentrically mounted onthe main shaft, said drive shaft being axially shiftable to vary the eccentricity ofthe hubs andy said pistons being connected to said hubs; pipes ,connecting i each pair of opposite cylinders; a control valve for the pipes connected between' the cylinders of each pair; a lever system for the valve; means onithe main shaft'for operating the lever system and for adjusting and'aXially shifting saiddrive shaft to vary the eccentricity ofthehubs; and an automaticauxiliary liquid inlet-for each cylinder. f

, 5. A progressivel hydraulic speed Vclutch comprising a fly-wheel having a pluralityl of pairs of cylinders therein; a piston'for each fly-wheel; a main drive shaft; a pair of hubs loo cylinder; a motor'crank shaft secured to said eccentrically mounted on the* mainfshaftjsaid drive shaft being axially shiftableto vary the eccentricity of the hubs and said pistons being connected to said hubs; pipes connect` ing each pair of opposite-cylinders; a controlv valve for the pip'esconnected between the cylinders of each pair; a plurality of springs on.y the main drive shaft; and means for separatelyi operating said `'control v.valve and aX- ially shifting ysaid drive shaft to vary ythe eccentricity of the hubs. f

y In testimony whereof I/afliXY my'signature;

ROBERTO sA'LLER. Q 

